Transmission of induced impulses.



No. 861,126. PATENTED JULY 23, 1907.-

' I. KITSE'E. 4

TRANSMISSION-0P INDUCED IMPULSES. APPLIOATIONIILED 00T.11. 1906.- 7

UNITED sTA rns PATENT OFFICE.

, ISIDOB. KITSEE, OF PHILADELPHIA, PENNSYLVANIA.

. Specification of Letters Patent.

'rnansmssron' on mnvcnn nuscns'ss.

Patented July 23, 1907.

Appli ation fil d cast 11, 190 Serial No. 333,415.

To all whom it concern:

Be it known that I, ISIDOR Kr'rssn, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Transmission of Induced Impulses, of which the following is a specification.

My invention relates to an improvement in the transmission of induced impulses.

It is well'known, that if a'current of electricity is sent through the primary of a converter or inductorium, a momentary impulse of opposite direction is induced in the secondary and, when the flow of the current ceases, amom'en'tary impulse is induced in the second.- ary of the same direction as the former flow of the current in the primary. These impulses are of comparatively high clectro-motive force and their nature may be defined therewith, that the potential does not gradually rise and fall, but its rise to the highest potential is instantaneous and abrupt, and their. employment in electric telegraphy was found impractical, for the reason that no means have been found to prevent the mutualinduction of aerial conductorsand no means have so far been found to prevent them froin ilnjuring theins'ulation; of an electric cable.

It is the aim of my invention to so convert theseimpulseathat the same may be safely and adya'ntageously employed in electric transmission.

In the course of my experiments, Lhave discovered that, whereas an impulse, such as is'induced in the secondary of an inductorium, cannot with safety be transmitted over an insulated line, and cannot be used telegraphically in conjunction with a telephonic impulse in its original form, its employment in telegraphy as well as for other purposes is made practical, ii convei ted in a manner so that the rise as well as fall of potential is a gradual one, and I have discovered that such result can be obtained with the aid of static devices shunting or short circuiting the secondary in which these impulses are generated.

Referring to the'drawing, Figure 1 is a diagram of a converting device embodying my invention. Fig.2 is-a diagram illustrating graphically the difference between the unconverted and converted induced impulse. In-this figure, 8 represents the unconverted impulse and 9 the impulse converted. It will be seen from this figure,''tlat .wi\er,eas the converted impulse may be represented by a broadened curve, the unconverted impulse is best illustrated by the nearly straight line or sharp curve.

In my experiments, I have found that the timeunit for the passing of these impulses may be increased from one to five, if a large enough capacity is inserted in the circuit shunting the secondary. 'lhebest method of observing the gradual flattening, so to speak, of the induced impulse is: to insert an adjustable condenser in the shunt and to insert a ballastic galvanometer and an ear-phone in the circuit representing the lineof transmission. When the condenser is reduced to the smallest capacity, the movement of the needle is sharply, jerky, and the ear-phone pro- 'duc es also a sharply defined click, but with the gradual increase of the capacity of the condenser, the movement of the needle becomes a more gradual one and the click in thephone assumes a hollow sound, gradually decreasing in volume, until finally, when the capacity oithe condenser is greatly increased, entirely disappearing.

In the drawing, 10 is the line which may be used for electric transmission of intelligence or for the transmission of power; 1 is the inductorium as an entirety; 2 is the primary and 3 the secondary thereof. The primary is here shown as locally connected to a'source of current 5 with the interposition of a key 6, but it is obvious that any other source of current than the batteries here shown maybe inserted in the-circuit; so.

also may the key 6 be replaced by other means adapted Itooperate the electric circuit; 4 are the static means,

here shown as a condenser, connected in shunt as to the secondary 3. T I have not shcwnhere the means to vary the capacity of such condenser as such means are, old'and well understood. 7

I have shown and de'scribedlherein subject-matter not claimed, but claimed in my co-pending application Serial No. 335780, filed September 22, 1906.

Having now described myinventiom'what I claim as new and desire to secure by Letters Patent is:

1.; As an improvement in the art'of electrical signaling over a circuit or conductor, the method which consists in producing a. sharp electrical-impulse, and converting said sharp impulse tion.

2. As an Improvement in the art of electrical signaling over a clrcult'or. conductor, the method which consists in producing aisharp electrical impulse -storlng energy said impulse in 'electro-statlc form,,and causing said stored energy'to flow; to line as an impulse of relatively great duration. 4

3. As an improvement in the art of electrical signaling over a circuit or conductor, the method which consists in into a line impulse of relatively great duragenerating a current, chang'ing or int rrupting saldcurrent, derlvlng a sharp induced impulse therefrom, and converting said sharp Induced impulse into a line impulse of relatively great duration.

4. As an improvement 1n the art of electrical signaling over a circuit or conductor, the method which consists in be sent,stdriiig energy.oijsaid itn' p llses ln eiectrd statig- .form, and causing said engngy t0 flow'to llne'ai; impillaes 4s- As an'impiovementj in the ar t of signqling'bver'a ci1'- cuit (ii-conductor, the methbd'which consis sts in producing}. sliafp electrical impulges, controlling-the production of {of'relatiygly 'grat dul'ati0n. '1 said impulses in accordance with the signal to 'be-sent, and- I '-In testimony-'wliereofi 'afllx my signiture in' pieSence'Qf 5 converting said shin-1) impulses intol-line impulses of relatwowitnesses'.

tively greatduraiion. i v I v i 6. As an improvement-in the art of electrical signaling over a circ uit 0l' conductor, the method whlchconslsts in generating sl1a1 p electrical impulses, controlling the pro- ]0 dilation of said impulses in accordance with the signal to ISIDOR'IhT SESEE} Witnesses I MARY C. SMITH, EDITH R. STILQEY. 

